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Book类:
- public class Book implements Comparable{
- String name;
- double price;
- public Book(String name,double price) {
- this.name=name;
- this.price=price;
-
- }
- public int compareTo(Object b) {
- Book book=( Book)b;
- return (int) (this.price-book.price);
-
- }
-
-
-
-
-
- }
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- import java.util.Collections;
- import java.util.Iterator;
- import java.util.LinkedList;
- import java.util.List;
-
- public class TestBook {
- public static void main(String[] args) {
- List<Book>list=new LinkedList<Book>();
- list.add(new Book("Java",25));
- list.add(new Book("数据库技术",30));
- list.add(new Book("C++",29));
- Book book1=new Book("计算机网络技术",29);
- Iterator<Book> it=list.iterator();//通过迭代器读取书名
- System.out.println("新书:计算机网络技术与下列图书:");
- while(it.hasNext()){
- Book book=it.next();
- if(book1.price==book.price)//比较两书的价格
- System.out.println(book.name);
- }
-
- System.out.println("具体价格为:"+book1.price);
- }
- }
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运行结果显示:
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